Year	Number of Firms
1992-01-01	1
1997-01-01	9
2002-01-01	15
2003-01-01	15
2004-01-01	14
2005-01-01	18
2006-01-01	18
2007-01-01	16
2008-01-01	34
2009-01-01	20
2010-01-01	15
2011-01-01	25
2012-01-01	15
2013-01-01	22
2014-01-01	19
2015-01-01	15
2016-01-01	15